# CVE-2023-1373: W4 Post List < 2.4.6 - Reflected XSS

> Attackers can execute arbitrary scripts in victim browsers via unescaped URLs in the W4 Post List WordPress plugin.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 17 Apr 2023
- **Updated:** 6 Feb 2025
- **Also known as:** GHSA-hgqw-hh57-7q9g

## What is CVE-2023-1373?

CVE-2023-1373 is a medium-severity cross-site scripting vulnerability in Unknown W4 Post List, published on 17 Apr 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

The W4 Post List WordPress plugin before 2.4.6 does not escape some URLs before outputting them in attributes, leading to Reflected Cross-Site Scripting

## Which versions are affected by CVE-2023-1373?

It affects 1 product.


Products: W4 Post List Project W4 Post List.

## How do I fix CVE-2023-1373?

No fix has been published for CVE-2023-1373 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-1373 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-1373 exists.

## Other vulnerabilities in Unknown W4 Post List

- [CVE-2023-27413](https://insights.sbomify.com/CVE-2023-27413/): WordPress W4 Post List Plugin <= 2.4.4 is vulnerable to Cross Site Scripting (XSS) (medium 6.5)
- [CVE-2023-1371](https://insights.sbomify.com/CVE-2023-1371/): W4 Post List < 2.4.6 - Subscriber+ Password Protected Post Content Disclosure (medium 6.5)
- [CVE-2023-0374](https://insights.sbomify.com/CVE-2023-0374/): W4 Post List < 2.4.6 - Contributor+ Stored XSS (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-1373 and fix it if it is affected.

What it is: CVE-2023-1373 is a medium-severity cross-site scripting vulnerability in Unknown W4 Post List, published on 17 Apr 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-1373 exists.

Affected product: Unknown W4 Post List. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2023-1373/ (Markdown: https://insights.sbomify.com/CVE-2023-1373/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-1373
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-1373
- OSV: https://osv.dev/vulnerability/CVE-2023-1373

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-1373/
Summaries are generated and may contain mistakes; the official description above is the record.